This work describes the project process of a vacuum tube audio compressor, as well as the implementation of its prototype. The main premise in the compressor design is to adopt vacuum tubes for the audio signal compression. ...

This paper presents a study of the difference of voice, acoustic guitar and White Noite audio recordings characteristics, due to modification of the cables (Volcano and Hayonik) of the microphones (dynamic and condenser) ...

Substitution of the material used in the pickup coil winding may be advantageous in aspects of cost and noise characteristics obtained. The replacement of the copper used in the pickup coil of aluminum has been the topic ...

When designing an environment or an equipment it is often necessary to consider its acoustic conditions, such as the amount of sound that transmitted to nearby environments, as there is often a need for sound insulation, ...

This paper presents the development of an audio capture device that uses a microphone to acquire analog signals and send digital signals to the computer via Ethernet. The system in question has as premises the acquisition ...

The Science teaching in the elementary school is the base to graduate new searchers. By this work it is aimed in an edutainment, through it the children can build their own experiment. By simple experiments ...

Noise pollution is one of the greatest problems to be solved by smart cities. This paper seeks for a solution on how to map sound data, and how to use it to help delegate effort and resources, either human or material, ...